I am running 10.4.9 on my MBP C2D 2.33 GHz with 2 GB RAM. I don't know what happened, but within the last few days it has become a litte more sluggish than usual. I notice it particularly in using command-tab to switch apps. It takes a little longer than I'm used to in bringing up the app once I've chosen it rrom the command-tab UI. I've repaired disk permissions, restarted many times, but nothing is fixing this problem. Anyone have a solution?